Document Detail

Fourier analysis of impedance rheography for peripheral arterial occlusive disease.
MedLine Citation:
PMID:  12682839     Owner:  NLM     Status:  MEDLINE    
This study identified those harmonics from the frequency spectrum of electrical impedance rheographic signals that discriminate between patients with and without peripheral arterial occlusive disease (PAOD). Ninety-four patients with suspected PAOD were evaluated by impedance rheography and ankle-arm blood pressure index. The leg with the lower ankle-arm index was used in the analysis and a haemodynamically relevant PAOD was assumed at an ankle-arm index lower than 0.85. The frequency spectrum of the impedance signals of the shank was calculated by means of a fast Fourier transformation algorithm. The first ten harmonics were used as independent variables in a stepwise logistic regression analysis to evaluate the dependent variable PAOD. In the regression analysis only the third harmonic was accepted ( P<0.0001). The correct classification of the patients was 90%. In conclusion, by means of Fourier analysis of impedance rheographic signals, a high accuracy in the diagnosis of PAOD can be achieved.
Othmar Schuhfried; Günther Wiesinger; Josef Kollmitzer; Christian Mittermaier; Michael Quittan
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Validation Studies     Date:  2003-04-04
Journal Detail:
Title:  European journal of applied physiology     Volume:  89     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2003 May 
Date Detail:
Created Date:  2003-05-08     Completed Date:  2004-02-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  384-6     Citation Subset:  IM    
Department of Physical Medicine and Rehabilitation, University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria.
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MeSH Terms
Aged, 80 and over
Arterial Occlusive Diseases / diagnosis*,  ultrasonography
Diagnosis, Computer-Assisted / methods*
Electric Impedance / diagnostic use*
Fourier Analysis
Middle Aged
Peripheral Vascular Diseases / diagnosis*,  ultrasonography
Plethysmography, Impedance / instrumentation,  methods*
Reproducibility of Results
Sensitivity and Specificity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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